Nature's Way Cedar Bat House is a unique triple chamber house that comfortably fits up to 300 bats. It features front and side air vents, landing skerfs and removable inserts with durable nylon mesh for easy grip hanging. Naturally insect and rot resistant cedar has a water based preservative to maintain color longer and hinder mold and mildew growth. All hardware is rust free and comes with a 5 year warranty.